Place a check mark in the box next to each situation tha
 represented by the equation
 (5X-15) = -75.
 A. Mark paid $15 for each of 5 shirt by by credit card, so his available credit decreased by $75 in all.
 B. Peggy donated $15 to charity each week for 5 weeks. Her account changed by -$75.
 C. Ryan earned $15 each week for 5 weeks. So he gained $50 in all.
 D. An airplane descended at a rate of 15 meters per second for 5 seconds. Its altitude changed by -75 meters.
 E. A submarine dove 15 feet and then rose 5 feet. Its elevation changed by -75 feet.